.~.~ Refracting means and radio wave energy filters (e.g., lenses and polarizers) {2}
910
.~.~.~ Zoned type
DEFINITION
Classification: 343/910
(under subclass 909) Subject matter wherein the component presents to the wave front a propagating medium whose surface offers abrupt changes in propagating characteristic.
(1) Note. These changes may result from changes in propagating material, or in length of propagating path such as a stepped formation. A mere series of parallel metal
strips in an air dielectric would not be classified here, but in subclass 909, above.
